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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Alzheimer Dis Assoc Disord. 2019 Oct-Dec;33(4):299–306. doi: 10.1097/WAD.0000000000000353

Table 3.

Multivariable model results

Covariate OR 95% CI P-value
Total strategy score
 •  F1 (First Follow-up) [Range]
   ○ Lower [25,38]
   ○ Middle (38,45]
   ○ Upper (45,63]
 •  F2 (Second Follow-up) [Range]
   ○ Lower [25,38]
   ○ Middle (38,45]
   ○ Upper (45,63]
 •  F3 (Third Follow-up) [Range]
   ○ Lower [25,38]
   ○ Middle (38,45]
   ○ Upper (45,63]


1.00
1.68
1.59

1.00
1.38
1.34

1.00
1.44
1.05


-
(1.42, 1.98)
(1.30, 1.94)

-
(1.11, 1.71)
(1.01, 1.77)

-
(1.09, 1.90)
(0.73, 1.51)

<0.0001
-
<0.0001
<0.0001

-
0.0035
0.0408

-
0.01
0.77
Diagnosis
 • Normal control
 • MCI
 • Dementia

1.00
0.79
0.62

-
(0.69, 0.89)
(0.55, 0.69)
<0.0001
-
0.0003
<0.0001
Race
 • White
 •  Asian
 •  African American
 •  Other

1.00
0.88
0.66
0.93

-
(0.69, 1.12)
(0.57, 0.76)
(0.65, 1. 53)
<0.0001
-
0.31
<0.0001
0.72
Ethnicity
 • Non-Hispanic
 •  Hispanic

1.00
0.90

-
(0.72, 1.12)

-
0.36
Study partner type
 • Spouse/partner
 • Adult child
 •  Other

1.00
0.86
0.89

-
(0.73, 1.01)
(0.76, 1.06)
0.1783
-
0.06
0.19
Age (x5 years) 1.06 (1.03, 1.09) <0.0001
Education (years)
 • Some high school
 • High school
 • Some college
 • College
 • Graduate

1.00
1.29
1.47
1.70
1.81

-
(1.01, 1.66)
(1.14, 1.88)
(1.32, 2.19)
(1.4, 2.31)
<0.0001
-
0.04
0.002
<0.0001
<0.0001
Visit length*
 • 0–4 hours
 • 4–5 hours
 • >5 hours

1.00
0.90
0.65

-
(0.78, 1.03)
(0.54, 0.78)
<0.0001
-
0.14
<0.0001
Battery length*
 • 0–2 hours
 • >2 hours

1.00
1.10

-
(0.95, 1.27)

-
0.20
Unmarried participants
  •  Female vs. male

1.24

(1.02, 1.50)

0.023
Married participants
  •  Female vs. male

0.83

(0.74, 0.93)

0.002
*

Based on distribution of results and observed regression coefficients, total ADRC visit length and neuropsychological battery length were incorporated as binary covariates in regression models.

**

Test for interaction between number of tactics and follow-up visit resulted in a p-value of 0.192

***

Test for interaction between sex and marital status resulted in a p-value of 0.0002599.